precambrian eon   (TTS Sound)

The precambrian_eon has 1 Senses.

• precambrian aeon, precambrian period, precambrian, precambrian eon
• 先カンブリア時代
• the eon following the Hadean time and preceding the Phanerozoic eon; from about 3,800 million years ago until 544 million years ago
• ハデスの時代に続いており、顕生累代に先行している永劫